1 heavy rain, 1 flood, as filed by the National Weather Service.
Every event with a place to put it; 2 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Quad Cities, IA wrote its last area forecast discussion before the first event at Jul 21, 12:53 AM CST, 2 hours 7 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE QUAD CITIES IA IL 153 AM CDT SAT JUL 21 2001 SHRA/TSRA DEVELOPING ON SCHEDULE THIS MRNG...MAINLY N OF A LINE THRU KFOD-KCID-KORD. MOST OF THIS ACTIVITY IS ELEVATED...BEING HELPED ALONG BY H5/H7 DISTURBANCE IN AREA OF ELEVATED MSTR. SFC MESO ANALYSIS INDICATES BNDRYS IN AND AROUND CWA...WITH STNRY FNT FM SERN NE INTO E CTRL MO. DEWPOINTS IN MID 70S COVER MOST OF THE CWA...WITH THE NWRN AND SWRN SECTIONS BEING THE EXCEPTIONS. SLATER PROFILER INDICATING H5/H7 DISTURBANCE PASSAGE IN PROCESS...AND THIS IS SUPPORTED BY KDMX 88D RETURNS. FOR OUR CWA...THE AVN...ETA...AND RUC VERIFIED BEST WITH RESPECT TO UA FEATURES. ALL 3 MODELS INDICATED AN H7 WAVE FM SRN MN INTO NRN IA...WITH AVN HAVING BEST PLACEMENT OF IT (W OF THE OTHER TWO). MODELS THEN PROGRESS THE H5/H7 DISTURBANCE EWD. EXPECT PRESENT PCPN TO INCRS IN COVERAGE THRU THIS MORNING AS IT MOVS SLOWLY EWD...WITH BEST CHANCES N OF A LINE THRU MARENGO...WAPELLO...AND GALESBURG. PCPN PSBL ACRS REST OF CWA TOO...JUST LOWER CHANCES. GIVEN RELATIVELY SLOW MVMT AND RELATIVELY HIGH MSTR (WATER VAPOR SHOWS MSTR PLUME IN PLACE)...LOCALLY HEAVY RAINS PSBL. (STMS IN GRANT CO OF WI RECENTLY PRODUCED 88D ONE-HOUR ESTIMATES OF 2 INCHES.) MARGINALLY SVR STMS PSBL THIS MORNING. PCPN WL GRADUALLY END FROM W TO E TDA ACRS CWA...WITH PCPN PSBL AGAIN SUN WITH H5 DISTURBANCE MOVG OVR REGION. TEMPS ARND 90 LKLY BOTH TDA AND SUN...WITH HIGHER TEMPS PSBL SUN AS ANY PCPN AND CLD DEBRIS WL HELP KEEPS TEMPS DOWN SLIGHTLY TDA. WITH DWPTS IN THE MID 70S...HEAT INDICES WL BECOME A CONCERN ESPCLY SUN WITH HIGHER TEMPS. AS DAY SHIFT ON FRI SAID...HEAT ADVISORY MAY HAVE TO BE CONSIDERED. WL DEFER HEAT-RELATED HEADLINES TO NEXT SHIFT OR TWO...BUT WL PLAY UP THE HEAT IN THIS MRNG/S SWO. EXTENDED... GOING EXTENDED LOOKS GOOD. YESTERDAY (FRI) PM/S AFDMLI EXTENDED DISCUSSION STILL COVERS SITN WELL...SO SEE LITTLE NEED TO SPEND MUCH ADDITIONAL TIME ON IT HERE. CDFNT PROGGD TO MOVE THRU CWA ON MON... WITH HOT AND HUMID INVOF IT. FNT THEN STALLS TO OUR S...WITH SHRA/TSRA PSBL REMAINDER OF EXTENDED PD. TEMPS LOOK GOOD AS WELL. .DVN... IA...NONE. IL...NONE. MO...NONE. JAZ
The national radar mosaic for the moment the first event began.
1 heavy rain, 1 flood. Local standard time, as filed.
2.92 inches of rain fell in 2 hours, filling ditches and ponding on streets. Reported by a trained storm spotter.
11th street flooded. Reported by law enforcement.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Illinois in 2001Every state in 2001This day in weather historyWarnings in Illinois, July 2001
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5261701, 5261702.